气候变化领域集成服务门户(CCPortal): The southern ocean's role in carbon exchange during the last deglaciation

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DOI	10.1126/science.1208163
	The southern ocean's role in carbon exchange during the last deglaciation
	Burke A.; Robinson L.F.
发表日期	2012
ISSN	0036-8075
起始页码	557
结束页码	561
卷号	335 期号:6068
英文摘要	Changes in the upwelling and degassing of carbon from the Southern Ocean form one of the leading hypotheses for the cause of glacial-interglacial changes in atmospheric carbon dioxide. We present a 25,000-year-long Southern Ocean radiocarbon record reconstructed from deep-sea corals, which shows radiocarbon-depleted waters during the glacial period and through the early deglaciation. This depletion and associated deep stratification disappeared by ∼14.6 ka (thousand years ago), consistent with the transfer of carbon from the deep ocean to the surface ocean and atmosphere via a Southern Ocean ventilation event. Given this evidence for carbon exchange in the Southern Ocean, we show that existing deep-ocean radiocarbon records fromthe glacial period are sufficiently depleted to explain the ∼190 per mil drop in atmospheric radiocarbon between ∼17 and 14.5 ka.
英文关键词	carbon; water; atmospheric chemistry; carbon dioxide; carbon flux; coral; deep sea; degassing; glacial-interglacial cycle; last deglaciation; paleoatmosphere; radiocarbon dating; reconstruction; stratification; upwelling; ventilation; air conditioning; article; atmosphere; coral; deglaciation; glacial period; nonhuman; priority journal; sea; stratification; Southern Ocean; Anthozoa
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243196
作者单位	Massachusetts Institute of Technology, Woods Hole Oceanographic Institution Joint Program in Oceanography, Mailstop 24, Woods Hole, MA 02543, United States; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Mailstop 25, Woods Hole, MA 02543, United States; School of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol BS8 1RJ, United Kingdom
推荐引用方式 GB/T 7714	Burke A.,Robinson L.F.. The southern ocean's role in carbon exchange during the last deglaciation[J],2012,335(6068).
APA	Burke A.,&Robinson L.F..(2012).The southern ocean's role in carbon exchange during the last deglaciation.Science,335(6068).
MLA	Burke A.,et al."The southern ocean's role in carbon exchange during the last deglaciation".Science 335.6068(2012).